Ordnance projectile



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Aug., 1W 11926..

A. E. HENDERSON ORDNANCE PROJECTILE Filed August 16. 1918 till dll

Jlllatented lng l?, M26.

vrs revenir w .l il i wiwi il s' satelliet .LBERT ENNIS HENDERSOE', QF TOROETO, NTAR, GANAEA.

QRDNANGE EFROJECTLE.

application niet august ie, raie.- serial ivo. 250,135.

The object of the invention is to provide an ordnance projectile, of the shell or other type, and more particularly a means or agency for application to or use in connection with a projectile, and more especially a missile designed for discharge from a rifle hored gun, whereby the trajectory and penetrating capacity are increased by reason oit a reduction ci the atmospheric resistance to Sight incident to cleavage or nose impact and to rear end or backward snction diie to the rareiication el the air at the lease et the proiectile.

More speciiically, the object is to miniraise or eliminate the nose pressure or wedge-like spreading or pod-ily displacen ment ci the air at the forward end oi? a projectile, ley providing lor a rotary slicing or cutting and progressive transverse com`= pression or con ensatinn et the air to open a path through which, with the least possible disturbance ci adjacent air particles, the projectile may pass lont slight skin friction and practically no rearward snca tionD carrying ont foregoing general chgects it is the purpose the invention in. detail lirst.. Tc '-irovide nose piece any so as to provide le ien constructed least-resistance te the tienen l., "do provide a nose piece ior shells nvlneh is a "ated te canse an increase in tne velocity est light.

Ylo arrange such nose piece in convenient term tor application and securement denitely a shell. v

liourth. To adapt the form ol the nose piece to the varying conditions found in connection with the dimensions and veloci- Y orvvard and outer edges 16 and 17 to proties of diierent shells.

Filth. 'lo provide means lor ohliterating the construction et the nose piece after the shell has performed its function or has been exploded. l

Sixth. 'lio adapt the nose piece to the ordinary shell in such a manner as not to interfere with the loading or discharging et the shell. v

Still further objects md advantages ot the invention will appearin the course et the following description oil a preferred emloodiment, it heing understood, however, that various changes in ormpproportion and details may be resorted to, Within the scope of the appended claims, Without departing from the principles involved'.

ln the drawings Figure 1 is a side view, partly broken away, of a shell having a nose piece constructed in accordance with the invention.

lig. 2 is a transverse sectional View on the plane indicated by A -B ol Fie. l.

Fig. 3 is a similar view on the lines Ce-D et Fig.. l.

pig, is a similar vievv on the line lll-li or n Fig. 5 is a sectional vievv partly in elevation ci the same.

ln the form illustrated in liig. l there is employed shell d (preken away at 7 tor convenience) having mounted thereon the usual vvay a riding pand S, arranged near the hase indicated at 9. rlhreaded upon the nose l@ ci the shell 5 is the nose piece il having l@anges l2 which are prei erably integral thsrevv"'h, said danges having their maximum depth near the itinerari end 12a et the nose piece adjacent to line A--ld and shot/vn particnlarl in cross section 93.,

'The @anges l2 are gradually diminished or are reduced depth progressively as approach the end ril ci the nose piece, vvlnch is' coincident ith the nose end or? l l, disappearing at the point i5 and eilect merging into the snrliace er? the nose piece in the plane oi", juncture vvith the nose end of the shell.

The progressive decrease in the depth et the' idange l2 is shovvn graphically hy comparison ci Figures 2, 3, and d, representing cross sections at diderent points in the len th of the nose piece.Y

hedanges l2 are reduced toward their vide lor a slicing or cutting action as the projectile progresses and revolves by reason of the gyratory impulse due to the riding of the here of the gun from which the saine is discharged, and the face or 'forward surface oit each flange is hollovved or concaved as shovvn at 18 vvith the object et definitely separating the core of air necessary to provide a path tor the loody of the projectile from the surrounding mass or stratum ot air, under conditions tending to minimize the radial movement of the particles of air due to centrifugal torce. ln other Words lill ' the nose piece as constructed has the effect of penetrating the air in what may be regarded as azboring action, to the end that while there is a local lateral compression or condensation throughout a zone representing the path as defined by the diameter o f the projectile, the body of the air in proximity to this path remains substantlally undisturbed, with the incidental, though 1mportant result that the tendency to form a vacuum or atmospheric rarefaction at the rear end or base of the shell, and which ordinarily has a restraining effect, due to suction, is minimized.

In contradistinction to the progressive rearward reduction of the areas of the wings representing an essential part of the pathforming nose piece, the body or cone 19 from which said wi s project radially is progressively reduced 1n a forward direction from a diameter corresponding with the nose end of the shell to a vanishlng point at the forward extremities of said wings.

In Fig. 5 there is shown in section the nose of the shell exteriorly screw-threaded as at 21 to engage the interiorly threaded portion 22 of the nose piece, and formed in these engaging elements as at 23 is a seat 21 for the reception of a threaded locking pin 25.

Also centrally located in the nose piece is a conical cavity or recess 26 bounded at its rear end by a cross head 27 having an opening 28 for the reception of a fuse plug 29, designed to detonate a charge of explosive 30 contained in the cavity 26 for the purpose of destroying the nose piece on the explosion of the shell to prevent discover of its structure by the enemy. Obvious y a time fuse' may be employed in connection herewith and the cavity 31 in the base of the nose piece will form a suitable housing for the same.

As in the ordinary practice the rotary or gyrator movement of the projectile will be receive from the riing of the gun bore acting through the band 8 and it is proposed4 that with a given pitch of rifiing grooves, causing a given gyratory velocity, and with a given muzzle velocity due to the powder charge the pitch of the spiral flanges on the nose piece shall correspond approximately with the resultant of the two motions, to the end that the progress of the projectile shall be effected with the minimum skin friction upon the ianges, but obviously variations in one direction or the other in the matter of ratio of progressive movement -to gyratory movement may be ado ted to suit conditions under which the projectile is to be employed, with the result that if there is deviation in one direction or the other of the lpitch of the wings from a true resultant of t e two movements, the tendency will be either to increase the trajectory by reason Obviously the pitch of the flange and the length of the nose piece may be varied, as also may the curve 18 representing the concavity which in turn determines the relative cutting action and transverse compression or condensation of the air displaced.

From the foregoing description it will be obvious that in operation the flan es or wings serve in the capacity of bla esof which forward or penetrating edges are reduced to cutting dimensions while the lateral or exterior edges which are preferably continuous and extend on lines at a substantially uniform distance from the axis of the projectile and at a projection therefrom which is only slightly less than than the radius of the projectile, are similarly reduced to cut or slice the air, the outermost portions of the lateral blade. edges being directedforwardly with reference to the path of rotation to accentuate the cutting action and the extent of this forward deflection being at its maximum at the forward ends of the blades and being progressively reduced rearwardly therefrom.

Having described the invention, what I claim is 1. A xed nose piece for projectiles having concave-convex iianges at an angle to the line of the axis of the projectile, substantially as set forth.

2. A fixed nose piece for projectiles having fianges of concave formation on the side in the direction in which the projectile rotates, and having a corresponding convex formation on the opposite side of the flange, substantially as set forth.

3. A fixed nose piece for projectiles having concave-convex anUes disposed at an angle to the axis of Jdie projectile, said flanges tapering backward from a point in line with the axis of the shell, substantially as set forth.

4. A nose piece for projectiles having concave-convex flanges disposed at an angle to the axis of the projectile and gradually reducing in thickness outwardly, substantially as set forth.

5. A nose piece for projectiles having concave-convex anges gradually reducing rearwardly in depth, substantially as set forth.

6. nose piece ada ted to be ixedly attached to theforwar end of` a projectile said nose piece being of less diameter than the body of the projectile, and concave-conveX flanges thereon terminating in lateral and forward cutting edges, substantially ask set forth.

7 A nose piece for projectiles having 0ppositely disposed concave-convex flanges terminating in forward and lateral cutting edges the flanges gradually decreasing in thickness from their bases to their outer edges, substantially as set forth.

8. A nose piecevfor projectiles having ooncave-convex lian es rearwardly merging into the body of t e nose piece and tapering rearwardly from a point in the line of the axis of the projectile, substantially as set forth.

9. A nose piece for projectiles having concave-convex outwardly tapering rearwardly reducing flanges adapted to pentrate the au' or any fluid mediums with the minimum of resistance and ada ted to temporarily separate the pentrate air or other Huid from the surrounding uid body, substantially 'as set forth.

`10. A fixed nose ieee adapted to engage the forward end of) a projectile said nose piece having concave-convexflanges terminating in forward and lateral cutting edges, a receptacle therein for explosive material, and means for detonating the samevto obliterate the form of the said nose piece, substantiallyl as set forth.

11. Adevice of the kind described comprising a body having spiral iiutes formed therein beginning at a substantially intermediate point and continuing to one extremity and gradually increasing in depth from the' point of beginning to said extremity, the upper walls of the flutes forming arcuate wings for wiping action against tfahedwind when the device is rotated when ALBERT EN N IS HENDERSON. 

